51669028 has 12 divisors (see below), whose sum is σ = 91028700. Its totient is φ = 25660832.

The previous prime is 51669019. The next prime is 51669049. The reversal of 51669028 is 82096615.

It can be written as a sum of positive squares in 2 ways, for example, as 17656804 + 34012224 = 4202^2 + 5832^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42751 + ... + 43942.

It is an arithmetic number, because the mean of its divisors is an integer number (7585725).

Almost surely, 2^51669028 is an apocalyptic number.

It is an amenable number.

51669028 is a deficient number, since it is larger than the sum of its proper divisors (39359672).

51669028 is a wasteful number, since it uses less digits than its factorization.

51669028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86846 (or 86844 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 51669028 is about 7188.1171387228. The cubic root of 51669028 is about 372.4575343089.

The spelling of 51669028 in words is "fifty-one million, six hundred sixty-nine thousand, twenty-eight".